Concept:Dried grasses alone may not supply all nutrients needed by ruminants.
Feed supplements are added to correct such nutritional shortages.
Explanation:Ruminants normally get energy and roughage from grasses.
However, dried grasses often lack adequate protein, vitamins, and minerals.
These missing nutrients are essential for growth, milk production, and general health.
Adding a feed supplement supplies the deficient nutrients in a concentrated form.
It does not primarily increase water intake, add bulk, or reduce microbial activity.
Therefore, supplementation is a way to balance the diet when feeding dried grasses.
Answer:D. provide deficient nutrients